P0130 O2 Sensor Circuit (Bank 1, Sensor 1)
What does P0130 mean?
P0130 — O2 Sensor Circuit (Bank 1, Sensor 1) (bank 1). This is an OBD-II diagnostic trouble code a scanner retrieves when your vehicle's computer detects o2 sensor circuit (bank 1, sensor 1) on bank 1. The level of risk depends on how the vehicle is currently running and how long you've been driving with the light on.
Common causes of P0130
- Failed upstream oxygen sensor
- Damaged wiring or connector
- Exhaust leak before the sensor
- Fuel, air, or ignition system causing improper readings
- Contaminated sensor from coolant or oil
How to fix P0130
- Check for exhaust leaks upstream of the sensor
- Watch the O2 voltage switch with a scan tool
- Test sensor wiring and the 5-volt heater/reference circuits
- Verify the sensor's response against fuel trim data
- Replace the sensor only after ruling out exhaust and fuel faults